Okay kiddo, have you ever heard of a choke? It's something you put around someone's neck to make it hard for them to breathe. Does that sound scary? Well, there is a thing called a choke exchange that happens in a sport called jiu-jitsu, let me explain.
In jiu-jitsu, there are different ways to make someone submit, or give up, without hurting them. One of those ways is called a choke. It's kind of like a wrestling move where you wrap your arms around someone's neck and squeeze a little bit but not too hard. It's just enough to make it hard for them to breathe.
Now imagine that you are in a match with someone and you put them in a choke. They are trying to wiggle out of it, but you are really good and you keep squeezing. But suddenly, they flip over and you're on the bottom! Now they have their arms wrapped around your neck and they start to squeeze! That's what a choke exchange is. They went from being the person getting choked to being the person doing the choking. It's a really cool move, but you have to be really good and quick to do it.
So there you go, a choke exchange is when two people in a jiu-jitsu match switch from being the person getting choked to being the person doing the choking. It's like a game of tag but with chokes! Just remember, it's only okay to do this in a controlled environment with trained professionals.